6.19 Structural markers (本文終わり・改行)

Synopsis

Two self-contained marker directives carry document structure rather than inline styling. 本文終わり marks the end of the main body — a colophon or afterword follows — and is a block-level structural leaf. 改行 is a forced in-paragraph line break — an inline leaf.

Notation

Each is a self-contained directive with no opener/closer and no inner content:

［＃本文終わり］    ← end of the main body (a colophon/afterword follows)
［＃改行］          ← forced in-paragraph line break

body-end     = LBRACK HASH %s"本文終わり" RBRACK
forced-break = LBRACK HASH %s"改行" RBRACK

Parameters

None.

Semantics

• ［＃本文終わり］ yields a zero-width bodyEnd node — a block leaf (§8.1, like a break) standing on its own line. It marks the boundary after which a colophon or afterword follows; it does not capture or govern the following lines.
• ［＃改行］ yields a forcedBreak node — an inline leaf forcing a line break inside the current paragraph without ending it.
• Reference rendering (§8): bodyEnd → <div class="aozora-body-end"></div>; forcedBreak → <br />.
• 改行 is longest-match disambiguated from 改行天付き (the §6.6 top-flush hanging-indent form): only a bare ［＃改行］ is a forced break; ［＃ここから改行］天付き… opens an indent region (§6.6) instead.
• Serialization reconstructs each directive byte-exact (§7.6).

Error conditions

• None specific. A malformed marker body (an unrecognised directive between ［＃ and ］) falls to the generic annotation handling of §6.14 and round-trips byte-exact.

Conformance vectors

body_end, forced_break (under conformance/vectors/).